Shell Programming and Scripting

read DISK STH PART REST
[ "$DISK" -eq "00000" ] && printf "%s", "$PART is empty" || { printf "%s", "$PART is not empty"; xxd -a > ${PART}.txt

#!/bin/bash -xv

image="$1"
+ image='AD-ACE Recert.E01'

#Create a non-spaced, non-extensioned version of the filename for a folder name.
x="$image"
+ x='AD-ACE Recert.E01'
y=${x%%.*}
+ y='AD-ACE Recert'
iname=`echo ${y} | sed 's/ /_/g'`
echo ${y} | sed 's/ /_/g'
++ echo AD-ACE Recert
++ sed 's/ /_/g'
+ iname=AD-ACE_Recert

#Determine if a folder with the same name as the image file exists, if not create.
if [ -d $iname ]
	then	
		read  -a c -p"$iname folder(s) exists, continuing may overwrite previous data.  Continue? (y/n)"
		if [ $c = n ]
			then
				exit 1
		fi
	else
		echo "folder does not exist, creating"
		mkdir $iname
fi
+ '[' -d AD-ACE_Recert ']'
+ echo 'folder does not exist, creating'
+ mkdir AD-ACE_Recert

#Run MMLS to find empty portions of the disk, and find entries with 'Unallocated' in them.
mmls "$image" | grep Unallocated | while read line
	do
		ssect=`echo $line | awk '{print $3+0}'`
		esect=`echo $line | awk '{print $4+0}'`
		bleng=`echo $line | awk '{print $5*512}'`
		fname=`echo $line | awk '{print "Unallocated-'${ssect}'-'${esect}'"}'`
		ewfexport -f raw -S 0 -o $ssect -B $bleng -t ./$iname/$fname "$image" 2> /dev/null
	done
+ mmls 'AD-ACE Recert.E01'
+ grep Unallocated
+ read line
echo $line | awk '{print $3+0}'
++ echo 01: ----- 0000000000 0000000127 0000000128 Unallocated
++ awk '{print $3+0}'
+ ssect=0
echo $line | awk '{print $4+0}'
++ echo 01: ----- 0000000000 0000000127 0000000128 Unallocated
++ awk '{print $4+0}'
+ esect=127
echo $line | awk '{print $5*512}'
++ echo 01: ----- 0000000000 0000000127 0000000128 Unallocated
++ awk '{print $5*512}'
+ bleng=65536
echo $line | awk '{print "Unallocated-'${ssect}'-'${esect}'"}'
++ echo 01: ----- 0000000000 0000000127 0000000128 Unallocated
++ awk '{print "Unallocated-0-127"}'
+ fname=Unallocated-0-127
+ ewfexport -f raw -S 0 -o 0 -B 65536 -t ./AD-ACE_Recert/Unallocated-0-127 'AD-ACE Recert.E01'
+ read line
echo $line | awk '{print $3+0}'
++ echo 05: ----- 0000497792 0000501758 0000003967 Unallocated
++ awk '{print $3+0}'
+ ssect=497792
echo $line | awk '{print $4+0}'
++ echo 05: ----- 0000497792 0000501758 0000003967 Unallocated
++ awk '{print $4+0}'
+ esect=501758
echo $line | awk '{print $5*512}'
++ echo 05: ----- 0000497792 0000501758 0000003967 Unallocated
++ awk '{print $5*512}'
+ bleng=2031104
echo $line | awk '{print "Unallocated-'${ssect}'-'${esect}'"}'
++ echo 05: ----- 0000497792 0000501758 0000003967 Unallocated
++ awk '{print "Unallocated-497792-501758"}'
+ fname=Unallocated-497792-501758
+ ewfexport -f raw -S 0 -o 497792 -B 2031104 -t ./AD-ACE_Recert/Unallocated-497792-501758 'AD-ACE Recert.E01'
+ read line

#Determine if a file is empty or contains data.
echo "Results of sum command against all generated raw files" > $iname-sumresults.txt
+ echo 'Results of sum command against all generated raw files'
sum ./$iname/Unallocated*.raw >> $iname-sumresults.txt
+ sum ./AD-ACE_Recert/Unallocated-0-127.raw ./AD-ACE_Recert/Unallocated-497792-501758.raw
sum ./$iname/Unallocated*.raw | while read line
	do
		if [ `echo $line | awk '{print $1}'` = 00000 ]
			then
				echo $line | awk '{print $3 " is empty, disregarding."}'

			else
				echo $line | awk '{print $3 " is not empty.  Creating XXD report"}'
				opxxd=`echo $line | awk '{print $3}'`		
				xxd -a > $opxxd.txt
		fi
	done
+ sum ./AD-ACE_Recert/Unallocated-0-127.raw ./AD-ACE_Recert/Unallocated-497792-501758.raw
+ read line
echo $line | awk '{print $1}'
++ echo 16715 64 ./AD-ACE_Recert/Unallocated-0-127.raw
++ awk '{print $1}'
+ '[' 16715 = 00000 ']'
+ echo 16715 64 ./AD-ACE_Recert/Unallocated-0-127.raw
+ awk '{print $3 " is not empty.  Creating XXD report"}'
echo $line | awk '{print $3}'
++ echo 16715 64 ./AD-ACE_Recert/Unallocated-0-127.raw
++ awk '{print $3}'
+ opxxd=./AD-ACE_Recert/Unallocated-0-127.raw
+ xxd -a
+ read line